I recently bought a Criko THD-16 drill press from 1992. It is in good general shape, except for the quill pulley bearings that get fairly noisy when I tension the belt. I thus decided to take everyhting apart, clean it thoroughly, remove the rust, and replace all the bearings. You know, just in case.

Some more details (in French, sorry) in my post on the forum of Copain des Copeaux.
Also, more pictures available here.